61504

Appears in sequences

• arcsin(arcsin(tanh(x)))=x+4/5!*x^5+24/7!*x^7+1744/9!*x^9+61504/11!*x^11...at n=5A012124
• a(n) = (8*n)^2.at n=31A017066
• a(n) = (9*n + 5)^2.at n=27A017222
• a(n) = (10*n + 8)^2.at n=24A017366
• a(n) = (11*n + 6)^2.at n=22A017462
• a(n) = (12*n + 8)^2.at n=20A017618
• Squares with initial digit '6'.at n=12A045789
• (Terms in A014738)/4.at n=14A051515
• Denominator of 1/64 - 1/n^2.at n=23A061050
• Squares whose external digits (MSD and LSD) form a square. Or squares from which deleting the internal digits leaves a square.at n=44A077356
• Squares arising in A082209.at n=4A090567
• Squares arising in A082209.at n=10A090567
• Squares arising in A082209.at n=16A090567
• Squares arising in A082209.at n=22A090567
• Squares arising in A082209.at n=28A090567
• Squares arising in A082209.at n=34A090567
• Squares arising in A082209.at n=40A090567
• Squares arising in A082209.at n=46A090567
• Numbers with 21 divisors.at n=12A137484
• Expansion of (1-5x)/(1-8x+4x^2).at n=6A154627